| 单电流脉冲作用下的碳纤维石墨化 |
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| 引用本文： | 沈以赴,郭晓楠,张坤,李顺林,周本濂.单电流脉冲作用下的碳纤维石墨化[J].航空学报,1998,19(5):628-630. |
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| 作者姓名： | 沈以赴 郭晓楠 张坤 李顺林 周本濂 |
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| 作者单位： | 1. 中国科学院金属研究所, 沈阳, 110015;2. 南京航空航天大学材料科学与工程系, 南京, 210016;3. 中国科学院金属研究所、国际材料物理中心, 沈阳, 110015 |
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| 摘 要： | 用X射线衍射（XRD）、透射电子显微镜（TEM）等技术研究了PAN基碳纤维在单电流脉冲作用下的结构变化。结果表明，在ms量级的单电流脉冲作用下，难石墨化的PAN基碳纤维中的碳的乱层结构可转变成石墨结构，石墨化度为0.484.分析认为，用外场作用下的非晶态结构弛豫理论可以解释这种难石墨化碳的非平衡石墨化过程。
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| 关 键 词： | 碳纤维 脉冲电流 石墨化 |
| 收稿时间： | 1997-11-21 |
| 修稿时间： | 1998-03-05 |
GRAPHITIZATION OF PAN-BASED CARBON FIBRE BY AN ELECTRIC CURRENT PULSE |
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| Shen Yifu,Guo Xiaonan,Zhang Kun,Li Shunlin,Zhou Benlian.GRAPHITIZATION OF PAN-BASED CARBON FIBRE BY AN ELECTRIC CURRENT PULSE[J].Acta Aeronautica et Astronautica Sinica,1998,19(5):628-630. |
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| Authors: | Shen Yifu Guo Xiaonan Zhang Kun Li Shunlin Zhou Benlian |
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| Institution: | 1. Institute of Metal Research, Academia Sinica, Shenyang, 110015;2. Department of Materials Sciences and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016;3. Institute ofM etal Research and Internat ional Centre for Materials Physics, A cadem ia Sinica, Shenyang, 110015 |
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| Abstract: | The structural change of PAN based carbon fibre by an electric current pulse was studied by means of X-ray diffraction(XRD) and transmission electron microscopy(TEM). The results show that the tubostratic structure of non graphitizing carbon in the PAN based carbon fibre can be transformed into graphited structure by a millisecond pulse electric current. The degree of graphitization is 0.484. This non equilibrium graphitization of the PAN based carbon fibre induced by an electric current pulse may be explained with the theory of structure relaxation under the external force. |
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| Keywords: | carbon fibre electric current pulse graphitization |
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